Filler and preparation method thereof

A technology of polyurethane foam and activated carbon, applied in chemical instruments and methods, sustainable biological treatment, water/sludge/sewage treatment, etc., can solve problems such as insufficient microbial load, small specific surface area of ​​filler, complex production process, etc., to achieve The effect of promoting stable reproduction and growth, small volume density, and easy access to raw materials

Inactive Publication Date: 2016-04-27
杭州易宇环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of fillers in the prior art, such as small specific surface area, insufficient microbial load, complex production process, and high cost, the present invention provides a filler with high specific surface area, large microbial load, simple production process, and low cost.

Method used

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  • Filler and preparation method thereof
  • Filler and preparation method thereof
  • Filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] a filler such as figure 1 As shown, it is a polyurethane foam containing activated carbon powder, and every 100g of raw materials includes the following components through foaming processing:

[0025]

Embodiment 2

[0027] A kind of preparation method of filler comprises the steps:

[0028] Step (1): take polyether, water, liquid paraffin, triethylamine, foam stabilizer and dichloromethane according to the formula of embodiment 1, get the polyether of 10g and water, liquid paraffin, triethylamine, foam stabilizer The mixture was mixed and stirred for 30 minutes, then dichloromethane was added and stirred for 25 minutes to obtain liquid A;

[0029] Step (2): Take TDI, activated carbon and stannous octoate according to the formula of Example 1, and mix the remaining polyether in step (1) with TDI, activated carbon and stannous octoate to obtain liquid B; Control the temperature at 20°C;

[0030] Step (3): Mix liquid A and liquid B, mix and stir at 10,000 rpm for 15 seconds, pour into a foaming mold for foaming, after foaming, it needs to be aged for 25 hours, and the temperature during the aging process is controlled at 20°C .

Embodiment 3

[0032] A kind of filler, it is the polyurethane foam that contains activated carbon powder, and every 100g raw material comprises the component of following quality and is made through foaming process:

[0033]

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PUM

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Abstract

The invention relates to the sewage treatment technical field, and discloses a filler and a preparation method thereof; the filler is a polyurethane foam filler containing an activated carbon powder and is prepared by foaming and processing 30-45% of polyether, 10-15% of liquid paraffin, 5-10% of triethylamine, 2-5% of a foam stabilizer, 5-10% of dichloro methane, 3-5% of TDI, 3-7% of activated carbon, 1-3% of stannous octoate and the balance water. The filler has the advantages of excellent gas dynamics performance, small volume density, large specific surface area, and high adsorption efficiency, is not easy to lose in the sewage treatment process, and promotes microorganisms to stably breed and grow, so as to ensure that the filler has good biochemical degradation effect.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a filler and a preparation method thereof. Background technique [0002] The biological aerated filter is one of the biofilm treatment processes. The working principle is mainly to fill the filter with filler, use the filler as the carrier, grow a highly active biofilm on the surface, and aerate the inside of the filter. When the sewage flows through, the biofilm is attached to the surface of the filler, and the formation and metabolism of microorganisms, as well as the adsorption and interception of the filler are fully utilized to treat the sewage. In the actual treatment process, fillers with large specific surface area, rough surface, good for microbial growth, light weight, low density and stable chemical properties are required. [0003] At present, biological fillers with high specific surface area are generally columnar or spherical, and are manufactured by inje...

Claims

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Application Information

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IPC IPC(8): C02F3/10
CPCC02F3/106C02F3/108Y02W10/10
Inventor 潘坚强
Owner 杭州易宇环保科技有限公司
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